From a description of Totalitarian and Authoritarian Regimes:
"In this classic work, noted political scientist Juan Linz provides an unparalleled study of the nature of nondemocratic regimes. Linz's seminal analysis develops the fundamental distinction between totalitarian and authoritarian systems. It also presents a path-breaking discussion on the personalistic, lawless, nonideological type of authoritarian rule that he calls (following Max Weber) the 'sultanistic regime'."